YAN Huihui,GENG Qiming,LI Hang,et al.Arable Suitability, Constructive Suitability and Ecological Risk Comprehensive Evaluation of Unutilized Land in Guyuan County, Hebei Province[J].Research of Soil and Water Conservation,2019,26(01):360-367.
河北沽源县未利用地宜耕、宜建及生态风险综合评价
- Title:
- Arable Suitability, Constructive Suitability and Ecological Risk Comprehensive Evaluation of Unutilized Land in Guyuan County, Hebei Province
- Keywords:
- unutilized land resources; arable suitability; constructive suitability; ecological risk assessment; development function points; Guyuan County
- 分类号:
- F301.24
- 摘要:
- 土地资源的紧缺，势必对粮食安全产生不良效应，影响整个社会生活的稳定。所以，对未利用地的整治开发，是补充和保护土地资源的重要举措。通过科学引导土地开发利用，分析未利用地宜耕、宜建及生态风险，综合评价其开发利用方向和功能分区，是目前土地工作的重点，可为解决土地供求冲突的途径指明方向。通过对河北沽源县未利用地进行宜耕、宜建及生态风险分析，并运用遗传算法和权衡模型对多重适宜性评价结果进行有效综合，初步划定其用地功能分区，可以解决多种开发方向间的牵制问题提供借鉴，为全国的相似区域未利用地资源整治提供前期有效示范。结果表明：（1）沽源县未利用地宜耕开发可划分为4个等级，多为二级宜耕未利用地，主要分布在县域北部和西南部；（2）宜建开发可分4个等级，多为一级宜建未利用地，主要集中在县域的中北部；（3）就未利用地的生态风险评价而言，可划分为五级，多为中低生态风险区，生态风险整体上表现为南高北低；（4）沽源县的未利用地可初步划分为耕作用地、建设用地、生态用地3种用地功能区，耕作用地功能区大多分布在县域西北部，建设用地功能区主要位于县域中部，生态用地功能区大多分散在县域南部。
- Abstract:
- The shortage of land resources will have adverse effects on food security inevitably and affect the stability of the entire social life. Therefore, the remediation and development of unutilized land is a requirement of the times and an important measure for supplementing and ensuring land resources. By guiding the development and utilization of unutilized land scientifically, analyzing the arable suitability, constructive suitability and ecological risk of unused land, and evaluating synthetically the direction and function of its development and utilization zoning, and addressing the direction of land supply and demand conflicts are the focuses of land work. We analyzed the arable suitability, constructive suitability and ecological risk of unutilized land in Guyuan County of Hebei, and validated the multiple suitability evaluation results by coupling model and genetic algorithm comprehensive and preliminary delineation of the functional zoning of its land, which can provide reference for solving the problem of containment among multiple development directions, can also provide pre-effective demonstration of resource management for similar areas in the whole country. The results illustrated that:(1) the exploitation suitability of the arable unutilized land included four grades in Guyuan County, mostly the second-class cultivated unused land, mainly concentrated in northern and southwestern parts of the county; (2) the constructive suitability of the unutilized land has four grades, mostly the first-class constructive unused land, mainly concentrated in the north central area of the county; (3) unused land ecological risk assessment, can be divided into five levels, mostly low and medium ecological in the risk area, the ecological risk as a whole is high in the south and low in the north; (4) it can be divided into three kinds of key function partitions, cultivated land, construction land and ecological land in Guyuan County; most of the cultivated land functional areas are located in the northwest of the county; the functional areas for construction land are mainly located in the central part of the county; most of the functional areas for ecological land use are scattered south of the county.
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备注/Memo
收稿日期:2018-3-15;改回日期:2018-4-5。
基金项目:河北省社会科学资助项目"基于景观生态效应的河北省滨海地区土地利用格局研究"（HB17GL057）
作者简介:闫慧慧(1991-),女,河南周口人,硕士研究生,研究方向为土地资源规划与利用。E-mail:1073336187@qq.com
通讯作者:何玲(1980-),女,河北保定人,副教授,博士,研究方向为土地生态、土地持续利用与土地整治。E-mail:helingsss@163.com